Scientists warned that emergency cooling systems could fail and a reactor meltdown could occur.

科学家们警告说紧急冷却系统可能失灵，核反应堆的堆芯熔毁可能会发生。

《柯林斯英汉双解大词典》

Last week the scientists warned that a third of the world's polar bears could disappear in the next 40 years.

上周，科学家们警告说，世界上三分之一的北极熊可能会在未来40年里消失。

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If greenhouse gas emissions continue at the 2008 level, the scientists warned, the budget would be exceeded well before 2050.

继而也发出了警告，如果未来温室气体排放量继续同2008年持平，预算方案中所提及的二氧化碳总排放量将在2050年之前就远远超出我们的预期目标。

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The Copenhagen meeting drew about , 2,000 scientists from around the world, and the news they delivered was not encouraging as they warned of an increasingly warmer world with more frequent droughts, and food and health problems.

VOA: standard.2009.03.12

In early December, Saddam Hussein had all Iraqi scientists warned of the serious consequences that they and their families would face if they revealed any sensitive information to the inspectors.

CNN: Transcript of Powell's U.N. presentation

The spawning stock of tuna is only 36% of its level 30 years ago, and ICCAT's scientists warned in September that the Mediterranean bluefin was on the brink of collapse.

ECONOMIST: High time to save the Mediterranean bluefin

Last year, a group of scientists warned that the proposed road across the park could bring the number of wildebeest in the park, estimated at about 1.3 million, down to 300, 000.

BBC: Serengeti road scrapped over wildlife concerns